Nutritional Relationships in Ecosystems Quiz

Which of the following best describes the role of producers in an ecosystem?

• They break down dead organic matter
• They obtain energy by eating other organisms
• They make their own food using sunlight or chemical energy
• They control the population of prey species

What is the primary function of decomposers in an ecosystem?

• To produce oxygen through photosynthesis
• To break down dead organic matter and release nutrients
• To hunt and eat other organisms
• To compete for limited resources

Which of the following is an example of a mutualistic relationship?

• A lion hunting a gazelle
• A tree competing with other trees for sunlight
• Bees pollinating flowers
• A tapeworm living in a human intestine

How does predation help balance ecosystems?

• By increasing the number of prey species
• By reducing biodiversity
• By controlling prey populations
• By eliminating all weak individuals

What might happen if there's too much competition in an ecosystem?

• All species will thrive equally
• Some organisms may die or fail to reproduce
• Predators will become more numerous
• The ecosystem will always reach perfect balance

In a food chain, what typically happens to the amount of energy available at each successive trophic level?

• It increases
• It remains the same
• It decreases
• It fluctuates randomly

Which of the following best describes a food web?

• A single path of energy transfer through an ecosystem
• Multiple interconnected food chains
• The relationship between only producers and consumers
• The process of photosynthesis in plants

Why are there usually fewer tertiary consumers in an ecosystem?

• They reproduce more slowly
• They require more energy to survive
• They are always smaller in size
• They are not important to the ecosystem

How do decomposers help the ecosystem?

• By producing oxygen
• By hunting prey species
• By recycling nutrients back into the environment
• By competing with producers

Which of the following is NOT a way that human activities can disrupt ecological balance?

• Habitat destruction
• Introduction of invasive species
• Pollution
• Planting more trees